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bench: add fixed-width SipHash benchmarks

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Benchmark 32-byte hashes and inputs consisting of a 32-byte hash plus a 32-bit index with SipHash-2-4 and SipHash-1-3-UJ.
The UJ benchmark zero-extends the index into one 64-bit normal block.
Keep all four measurements together after shared correctness coverage and before changing `CCoinsMap`'s hasher.

Co-authored-by: Pieter Wuille <pieter@wuille.net>
This commit is contained in:
Lőrinc
2026-07-15 13:12:05 -07:00
parent 3aea85411f
commit 7ff55cc650
1 changed files with 49 additions and 3 deletions
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52
src/bench/crypto_hash.cpp
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@@ -190,10 +190,10 @@ static void SHA512(benchmark::Bench& bench)
});
}
static void SipHash_32b(benchmark::Bench& bench)
static void SipHash24_32b(benchmark::Bench& bench)
{
FastRandomContext rng{/*fDeterministic=*/true};
PresaltedSipHasher presalted_sip_hasher(rng.rand64(), rng.rand64());
PresaltedSipHasher presalted_sip_hasher{rng.rand64(), rng.rand64()};
auto val{rng.rand256()};
auto i{0U};
bench.run([&] {
@@ -203,6 +203,49 @@ static void SipHash_32b(benchmark::Bench& bench)
});
}
static void SipHash24_36b(benchmark::Bench& bench)
{
FastRandomContext rng{/*fDeterministic=*/true};
PresaltedSipHasher presalted_sip_hasher{rng.rand64(), rng.rand64()};
auto val{rng.rand256()};
uint32_t extra{rng.rand32()};
auto i{0U};
bench.run([&] {
ankerl::nanobench::doNotOptimizeAway(presalted_sip_hasher(val, extra));
++i;
val.data()[i % uint256::size()] ^= i & 0xFF;
extra += i;
});
}
static void SipHash13UJ_32b(benchmark::Bench& bench)
{
FastRandomContext rng{/*fDeterministic=*/true};
SipHasher13UJ sip_hasher{rng.rand64(), rng.rand64()};
auto val{rng.rand256()};
auto i{0U};
bench.run([&] {
ankerl::nanobench::doNotOptimizeAway(sip_hasher.Hash(val));
++i;
val.data()[i % uint256::size()] ^= i & 0xFF;
});
}
static void SipHash13UJ_36b(benchmark::Bench& bench)
{
FastRandomContext rng{/*fDeterministic=*/true};
SipHasher13UJ sip_hasher{rng.rand64(), rng.rand64()};
auto val{rng.rand256()};
uint32_t extra{rng.rand32()};
auto i{0U};
bench.run([&] {
ankerl::nanobench::doNotOptimizeAway(sip_hasher.Hash(val, uint64_t{extra}));
++i;
val.data()[i % uint256::size()] ^= i & 0xFF;
extra += i;
});
}
static void MuHash(benchmark::Bench& bench)
{
MuHash3072 acc;
@@ -273,7 +316,10 @@ BENCHMARK(SHA256_32b_STANDARD);
BENCHMARK(SHA256_32b_SSE4);
BENCHMARK(SHA256_32b_AVX2);
BENCHMARK(SHA256_32b_SHANI);
BENCHMARK(SipHash_32b);
BENCHMARK(SipHash24_32b);
BENCHMARK(SipHash24_36b);
BENCHMARK(SipHash13UJ_32b);
BENCHMARK(SipHash13UJ_36b);
BENCHMARK(SHA256D64_1024_STANDARD);
BENCHMARK(SHA256D64_1024_SSE4);
BENCHMARK(SHA256D64_1024_AVX2);